Gas shielded arc welding. Selected reference tables

Transcription

1 Gas shielded arc welding Selected reference tables

2 Inert gas welding selected reference tables At a glance This summarized compilation of reference tables is intended as an aid to orientation in shielding gas welding. It gives an overview of the wide range of welding inert gases and their areas of application. The tables can be helpful in the solution of welding problems but you should not miss out on the experience and advice of our welding experts. Special information on our shielding gases is contained in our detailed publications. For optimum control of profitability in inert gas welding, Messer has developed a welding cost calculation system with computer aided measured value processing. We are happy to place this facility at the disposal of users on request. Inert gas welding Tungsten inert gas welding Metal inert gas welding Non-consumable tungsten electrode consumable wire electrode TIG Plasma MIG MAG Tungsten inert gas Plasma- Metal inert gas Metal active gas welding welding welding welding open confined Inert gas CO 2 or O 2 arc arc atmosphere in shielding gas

3 Shielding gases for welding at a glance Product designation Group according as ISO Composition [%] Ar He O 2 CO 2 H 2 N 2 Process according as DIN EN Welding-Argon 4.6 I1 100 TIG/MIG Argon Special 4.8 I1 100 TIG/MIG Helium 4.6 I2 100 TIG/MIG Aluline He90 I TIG/MIG Aluline He70 I TIG/MIG Aluline He50 I TIG/MIG Aluline He30 I TIG/MIG Aluline He15 I TIG/MIG Aluline N Z balance 0,015 TIG/MIG Aluline He15 N Z balance 15 0,015 TIG/MIG Aluline He30 N Z balance 30 0,015 TIG/MIG Aluline He50 N Z balance 50 0,015 TIG/MIG Inoxline H2 R TIG Inoxline H5 R TIG Inoxline H7 R1 92,5 7,5 TIG Inoxline N1 N2 98,75 1,25 TIG Inoxline N2 N2 97,5 2,5 TIG Inoxline He15 N1 N2 83, ,25 TIG Inoxline He3 H1 R1 95,5 3 1,5 TIG Inoxline X2 M MAG M Inoxline C2 M12 97,5 2,5 MAG M Inoxline C3 X1 M MAG M Inoxline He15 C2 M MAG M Inoxline He30 H2 C Z balance 30 0,12 2 MAG M Ferroline C8 M MAG M Ferroline C18 M MAG M Ferroline C25 M MAG Ferroline X4 M MAG M Ferroline X8 M MAG M Ferroline C5 X5 M MAG M Ferroline C6 X1 M MAG M Ferroline C12 X2 M MAG M Ferroline He20 C8 M MAG M carbon dioxide (industrial grade) Forming gas (N 2 -H 2 -mixes) C1 100 MAG C N Root protection

4 Areas of application Standard shielding gases and their application in TIG welding Product Welding Argon Typical Mixes Group acc. ISO l1 Application High alloy and mild steels, aluminum alloys, other non ferrous metals Inoxline H 2 % H 2 R1 Austenitic CrNi steels 5 % H 2 R1 (5% and 7.5% preferably fully mechanical) 7,5 % H 2 R1 Inoxline N 1,25 % N2 Duplex, super-duplex 2,5 % N2 fully austenitic CrNi steels 15 % He,1,25 % N 2 N2 Helium 4.6 I2 Aluminum (negative polarity welding) Aluline He 15 % He I3 Aluminum, 30 % He I3 Nickel, Steels (orbital technique) 50 % He I3 Steels (orbital technique), 70 % He I3 Copper, 90 % He I3 TIG DC welding (preferably 90% He) Aluline N 0,015 % N 2 Z Aluminum + Al - alloys Aluline He N 15 % He, 0,015 % N 2 Z Aluminum + Al - alloys Argon % He, 0,015 % N 2 Z 50 % He, 0,015 % N 2 Z I1 Gas sensitive materials such as titanium, niobium, molybdenum, tantalum, as well as for root protection Forming gas 5 % H 2 N5 Root protection for high (N 2 -H 2 mixes) 8 % H 2 N5 alloy and alloyed steels 12 % H 2 N5 20 % H 2 N5 25 % H 2 N5 Standard shielding gases and their application in MIG welding Product Typical Mixes Group acc. ISO Application Aluline He 30 % He I3 Aluminum, nickel alloys 50 % He I3 CuNiFe alloys, copper 70 % He I3 Aluminum materials Aluline N 0,015 % N 2 Z Aluminum + Al - alloys Aluline He 15 N 15 % He, 0,015 % N 2 Z Aluminum + Al - alloys Aluline He 30 N 30 % He, 0,015 % N 2 Z Aluline He 50 N 50 % He, 0,015,% N 2 Z Inoxline He 30 H2 C 30 % He, 2 % H, 0,12 % Z Nickel-based materials Helium 4.6 I2 Copper (if preheating not possible)

5 Applications for MAG welding Product families for MAG welding Inoxline Ferroline Product family Application high alloy steels, conditionally mild steels mild steels, conditionally high alloy steels Classification of shielding gases for joint welding and related processes according as DIN EN ISO short term Components [%] main group sub group oxidizing inert reductive low reactive CO 2 O 2 Ar He H 2 N 2 I Balance 0,5 He 95 M1 1 0,5 CO 2 5 Balance a) 0,5 H ,5 CO 2 5 Balance a) 3 0,5 O 2 3 Balance a) 4 0,5 CO 2 5 0,5 O 2 3 Balance a) M2 0 5 < CO 2 15 Balance a) 1 15 < CO 2 25 Balance a) 2 3 < O 2 10 Balance a) 3 0,5 CO < O 2 10 Balance a) 4 5 < CO ,5 O 2 3 Balance a) 5 5 < CO < O 2 10 Balance a) 6 15 < CO ,5 O 2 3 Balance a) 7 15 < CO < O 2 10 Balance a) M < CO 2 50 Balance a) 2 10 < O 2 15 Balance a) 3 25 < CO < O 2 10 Balance a) 4 5 < CO < O 2 15 Balance a) 5 25 < CO < O 2 15 Balance a) C Balance 0,5 O 2 30 R 1 Balance a) 0,5 H Balance a) 15 < H 2 50 N Balance a) 0,5 N Balance a) 5 < N Balance a) 0,5 H ,5 N ,5 H 2 50 Balance O Z Gas mixtures with components, which are not listed in the table or gas mixtures with a composition out of the specified range. b) a) For this classification Argon may be replaced partially or completely with helium. b) Two gas mixtures with the same Z-classification must not be replaced against each other.

6 Cost comparison Shielding gas Shielding gas 70 % Helium / 30 % Argon 100 % Argon Labor cost Wire Gas Labor cost Wire Gas Edge preparatio 2,25 / unit 5,75 / unit Penetration intensification 20 mm 100 % Argon 70 % Argon 50 % Argon 30 % Argon 100 % Helium 30 % Helium 50 % Helium 70 % Helium Base material: Welding current: Sheet thickness: AI Mg 4,5 Mn 240 A 20 mm Good for you and the environment This brochure not only contains interesting information it is also kind to the environment as it is printed on 100% recycled paper. We would kindly ask you to dispose of any brochures that you have finished reading or no longer require as waste paper for recycling. Messer Group GmbH Gahlingspfad Krefeld Tel Fax welding-technology@messergroup.com Messer Group GmbH